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https://www.readbyqxmd.com/read/29333325/physicochemical-characterization-of-porcine-bone-derived-grafting-material-and-comparison-with-bovine-xenografts-for-dental-applications
#1
Jung Heon Lee, Gyu Sung Yi, Jin Woong Lee, Deug Joong Kim
Purpose: The physicochemical properties of a xenograft are very important because they strongly influence the bone regeneration capabilities of the graft material. Even though porcine xenografts have many advantages, only a few porcine xenografts are commercially available, and most of their physicochemical characteristics have yet to be reported. Thus, in this work we aimed to investigate the physicochemical characteristics of a porcine bone grafting material and compare them with those of 2 commercially available bovine xenografts to assess the potential of xenogenic porcine bone graft materials for dental applications...
December 2017: Journal of Periodontal & Implant Science
https://www.readbyqxmd.com/read/29328635/adsorption-and-molecular-fractionation-of-dissolved-organic-matter-on-iron-bearing-mineral-matrices-of-varying-crystallinity
#2
Elizabeth K Coward, Tsutomu Ohno, Alain F Plante
Iron (Fe)-bearing mineral phases contribute disproportionately to adsorption of soil organic matter (SOM), due to their elevated chemical reactivity and specific surface area (SSA). However, the spectrum of Fe solid-phase speciation present in oxidation-reduction-active soils challenges analysis of SOM-mineral interactions and may induce differential molecular fractionation of dissolved organic matter (DOM). This work used paired selective dissolution experiments and batch sorption of post-extraction residues to 1) quantify the contributions of Fe-bearing minerals of varying crystallinity to DOM sorption, and 2) characterize molecular fractionation using Fourier transform ion cyclotron resonance mass spectrometry (FT-ICR-MS)...
January 12, 2018: Environmental Science & Technology
https://www.readbyqxmd.com/read/29327090/alcohol-use-and-unprotected-sex-among-hiv-infected-ugandan-adults-findings-from-an-event-level-study
#3
Sarah E Woolf-King, Robin Fatch, Debbie M Cheng, Winnie Muyindike, Christine Ngabirano, Allen Kekibiina, Nneka Emenyonu, Judith A Hahn
While alcohol is a known risk factor for HIV infection in sub-Saharan Africa (SSA), studies designed to investigate the temporal relationship between alcohol use and unprotected sex are lacking. The purpose of this study was to determine whether alcohol used at the time of a sexual event is associated with unprotected sex at that same event. Data for this study were collected as part of two longitudinal studies of HIV-infected Ugandan adults. A structured questionnaire was administered at regularly scheduled cohort study visits in order to assess the circumstances (e...
January 11, 2018: Archives of Sexual Behavior
https://www.readbyqxmd.com/read/29324737/barriers-of-attendance-to-dog-rabies-static-point-vaccination-clinics-in-blantyre-malawi
#4
Stella Mazeri, Andrew D Gibson, Natascha Meunier, Barend M deC Bronsvoort, Ian G Handel, Richard J Mellanby, Luke Gamble
Rabies is a devastating yet preventable disease that causes around 59,000 human deaths annually. Almost all human rabies cases are caused by bites from rabies-infected dogs. A large proportion of these cases occur in Sub Saharan Africa (SSA). Annual vaccination of at least 70% of the dog population is recommended by the World Health Organisation in order to eliminate rabies. However, achieving such high vaccination coverage has proven challenging, especially in low resource settings. Despite being logistically and economically more feasible than door-to-door approaches, static point (SP) vaccination campaigns often suffer from low attendance and therefore result in low vaccination coverage...
January 11, 2018: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/29324322/kinetic-study-of-heavy-metals-cu-and-zn-removal-during-sewage-sludge-ash-calcination-in-air-and-n2-atmospheres
#5
Rundong Li, Zhenyu Zhai, Yanlong Li, Tianhua Yang, Yang Chen
Heavy metal control is essential during the thermochemical recovery of phosphorus (P) from sewage sludge ash (SSA). For medium volatile heavy metals, i.e. Cu and Zn, the effect of chlorine additive was complicated and more sensitive to temperature variation. So, in the in-depth study on the removal kinetics of Cu and Zn was necessary. Thus, the studies described in this paper considered the experiments and kinetic models of Cu and Zn removal in SSA through calcination under different atmospheres and temperatures...
December 23, 2017: Journal of Hazardous Materials
https://www.readbyqxmd.com/read/29320594/pivotal-trial-of-the-efficacy-and-safety-of-oxymetazoline-cream-1-0-for-the-treatment-of-persistent-facial-erythema-associated-with-rosacea-findings-from-the-first-reveal-trial
#6
Leon H Kircik, Janet DuBois, Zoe Diana Draelos, Philip Werschler, Kimberly Grande, Fran E Cook-Bolden, Emily Weng, David R Berk, Gurpreet Ahluwalia
An unmet need exists for a safe, tolerable, effective treatment for moderate to severe persistent facial erythema in patients with rosacea. This pivotal phase 3, multicenter, double-blind study evaluated the efficacy and safety of topical oxymetazoline in patients with facial erythema associated with moderate to severe rosacea. Patients were randomly assigned to treatment with oxymetazoline hydrochloride cream 1.0% or vehicle applied once daily for 29 days, and were followed for 28 days posttreatment. The primary efficacy outcome was having at least a 2-grade decrease from baseline on both the Clinician Erythema Assessment (CEA) and the Subject Self-Assessment for rosacea facial redness (SSA) scales (composite success) at 3, 6, 9, and 12 hours postdose on day 29...
January 1, 2018: Journal of Drugs in Dermatology: JDD
https://www.readbyqxmd.com/read/29320587/a-randomized-study-to-assess-the-efficacy-of-skin-rejuvenation-therapy-in-combination-with-neurotoxin-and-full-facial-filler-treatments
#7
Steven H Dayan, Thuy-Van T Ho, Jonathan T Bacos, Nimit D Gandhi, Arjun Kalbag, Selika Gutierrez-Borst
<p>BACKGROUND: Although non-surgical treatment options for facial rejuvenation are well-established, the literature remains limited regarding the combined effect of topical skin treatment with filler and neurotoxin on patient appearance and satisfaction. The objectives of this study were to assess the impact of a skin rejuvenation therapy in combination with neurotoxin or hyaluronic acid filler injection on skin quality and general aesthetic improvement as well as on short-term self-esteem.</p> <p>METHODS: From 2015 to 2017, 20 female patients were enrolled in our study and were randomized into two groups...
January 1, 2018: Journal of Drugs in Dermatology: JDD
https://www.readbyqxmd.com/read/29318400/sensitive-nonenzymatic-electrochemical-glucose-detection-based-on-hollow-porous-nio
#8
Gege He, Liangliang Tian, Yanhua Cai, Shenping Wu, Yongyao Su, Hengqing Yan, Wanrong Pu, Jinkun Zhang, Lu Li
Transition metal oxides (TMOs) have attracted extensive research attentions as promising electrocatalytic materials. Despite low cost and high stability, the electrocatalytic activity of TMOs still cannot satisfy the requirements of applications. Inspired by kinetics, the design of hollow porous structure is considered as a promising strategy to achieve superior electrocatalytic performance. In this work, cubic NiO hollow porous architecture (NiO HPA) was constructed through coordinating etching and precipitating (CEP) principle followed by post calcination...
January 9, 2018: Nanoscale Research Letters
https://www.readbyqxmd.com/read/29315327/ambivalence-in-pregnancy-intentions-the-effect-of-quality-of-care-and-context-among-a-cohort-of-women-attending-family-planning-clinics-in-kenya
#9
Eliud Wekesa, Ian Askew, Timothy Abuya
CONTEXT: Ambivalence in pregnancy intentions is well-documented in sub-Saharan African (SSA) settings and has been associated with inconsistent use of contraception, thereby exposing women using contraception to the possibility of unintended pregnancies. A better understanding of the potential role for client counseling interventions in enabling women to achieve their pregnancy intentions is essential for aiding program efforts to reduce unintended pregnancies. OBJECTIVE: To measure ambivalence in pregnancy intentions longitudinally and determine its association with the quality of care received, controlling for demographic, socio-economic and contextual factors among a cohort of family planning (FP) clients in Kenya...
2018: PloS One
https://www.readbyqxmd.com/read/29310575/a-comparison-of-estimators-from-self-controlled-case-series-case-crossover-design-and-sequence-symmetry-analysis-for-pharmacoepidemiological-studies
#10
Yoshinori Takeuchi, Tomohiro Shinozaki, Yutaka Matsuyama
BACKGROUND: Despite the frequent use of self-controlled methods in pharmacoepidemiological studies, the factors that may bias the estimates from these methods have not been adequately compared in real-world settings. Here, we comparatively examined the impact of a time-varying confounder and its interactions with time-invariant confounders, time trends in exposures and events, restrictions, and misspecification of risk period durations on the estimators from three self-controlled methods...
January 8, 2018: BMC Medical Research Methodology
https://www.readbyqxmd.com/read/29306221/breast-cancer-survival-in-soweto-johannesburg-south-africa-a-receptor-defined-cohort-of-women-diagnosed-from-2009-to-11
#11
Herbert Cubasch, Caroline Dickens, Maureen Joffe, Raquel Duarte, Nivashni Murugan, Ming Tsai Chih, Kiashanee Moodley, Vinay Sharma, Oluwatosin Ayeni, Judith S Jacobson, Alfred I Neugut, Valerie McCormack, Paul Ruff
BACKGROUND: South Africa's public healthcare system is better equipped to manage breast cancer than most other SSA countries, but survival rates are unknown. METHODS: A historical cohort of 602 women newly diagnosed with invasive breast carcinoma during 2009-2011 at Chris Hani Baragwanath Academic Hospital, Soweto, Johannesburg, was followed using health systems data to December 2014. 'Overall survival' time was defined from diagnosis to death or terminal illness...
January 3, 2018: Cancer Epidemiology
https://www.readbyqxmd.com/read/29303768/detection-of-autoantibodies-to-the-p200-epitope-of-ssa-ro52-antigen-a-comparison-of-two-laboratory-assays
#12
Elena Mattia, Ariela Hoxha, Marta Tonello, Maria Favaro, Teresa Del Ross, Antonia Calligaro, Anna Ghirardello, Amelia Ruffatti
BACKGROUND: Anti-p200 antibodies have been receiving growing interest in view of findings associating their presence to risk of fetal autoimmune congenital heart block (CHB). The study compares and evaluates the performance of two assays currently being used for their detection. METHODS: One hundred and sixteen pregnant women positive for anti-SSA/Ro52 antibodies were considered as the study population. Fifty women negative for anti-SSA/Ro52 antibodies were considered as the control population...
January 5, 2018: Clinical Chemistry and Laboratory Medicine: CCLM
https://www.readbyqxmd.com/read/29302463/prevalence-and-correlates-of-chronic-kidney-disease-in-a-group-of-patients-with-hypertension-in-the-savanah-zone-of-cameroon-a-cross-sectional-study-in-sub-saharan-africa
#13
Ba Hamadou, Jérôme Boombhi, Félicité Kamdem, Adeline Fitame, Sylvie Ndongo Amougou, Liliane Kuate Mfeukeu, Chris Nadège Nganou, Alain Menanga, Gloria Ashuntantang
Background: The prevalence of chronic kidney disease (CKD) is increasing worldwide due to an increase in the risk factors such as hypertension. The greatest burden is in low-income settings, coupled with late diagnosis and limited management resources. This work aimed at studying the prevalence and risk factors of CKD in a group of patients with hypertension in the Savanah zone in Sub-Saharan Africa (SSA). Methods: We carried out a cross-sectional study between January and May 2016 in the regional Hospital of Garoua-Cameroon...
December 2017: Cardiovascular Diagnosis and Therapy
https://www.readbyqxmd.com/read/29300179/a-novel-and-facile-synthesis-approach-of-porous-carbon-graphene-composite-for-the-supercapacitor-with-high-performance
#14
Ting Liu, Xuesha Zhang, Kang Liu, Yanyan Liu, Mengjie Liu, Wenyu Wu, Yu Gu, Ruijun Zhang
Herein, we propose a novel and facile synthesis approach of porous carbon/graphene composite. Graphene is obtained from the room-temperature expanded graphite (RTEG), not involving the use of graphite oxide (GO). In addition, porous carbon is acquired by carbonization and KOH-activation of polyrvinylpyrrolidone (PVP), which is used to exfoliate RTEG into graphene and inhibit the restacking of the resultant graphene in the present work. The prepared porous carbon/graphene composite behaves a high specific surface area (SSA) (3008 m2 g-1) and a hierarchical micro- and meso- pore structure (dominant pores in the range of 1-5 nm)...
January 4, 2018: Nanotechnology
https://www.readbyqxmd.com/read/29297112/relationship-among-hiv-related-stigma-mental-health-and-quality-of-life-for-hiv-positive-patients-in-tehran
#15
Mehrnaz Rasoolinajad, Nasrin Abedinia, Ahmad Ali Noorbala, Minoo Mohraz, Banafsheh Moradmand Badie, Abdulqader Hamad, Leyla Sahebi
People living with HIV/AIDS (PLHA) face several challenges in terms of the medical management of their disease. Alongside this are stigma, discrimination and psychosocial issues associated with HIV infection. In this study, the relationships associated with HIV-related stigma, mental health and quality of life for HIV-positive patients were investigated. This cross-sectional study examined a sample of 450 HIV positive patients from the Infectious Diseases and Behavioral Health Clinic of Imam Khomeini Hospital in the city of Tehran, Iran...
January 2, 2018: AIDS and Behavior
https://www.readbyqxmd.com/read/29294821/-victim-perpetrator-or-just-my-brother-sibling-sexual-abuse-in-large-families-a-child-advocacy-center-study
#16
Dafna Tener, Noam Tarshish, Shosh Turgeman
Sibling sexual abuse (SSA) is a continuum of childhood sexual behaviors that do not fit the category of age-appropriate curiosity. Although SSA may be the most prevalent and longest lasting form of intrafamilial sexual abuse-as well as the one with the worst repercussions-it is also the least reported, studied, and treated. Based on 100 mostly religious Jewish families referred to a child advocacy center (CAC) in Jerusalem from 2010 to 2015, this qualitative study examines SSA characteristics, dynamics, and perceptions of deviancy in multisibling subsystems...
July 1, 2017: Journal of Interpersonal Violence
https://www.readbyqxmd.com/read/29291064/efficient-removal-of-tetracycline-with-koh-activated-graphene-from-aqueous-solution
#17
Jie Ma, Yiran Sun, Fei Yu
Activated graphene absorbents with high specific surface area (SSA) were prepared by an easy KOH-activated method, and were applied in absorbing antibiotics, such as tetracycline (TC). After activation, many micropores were introduced to graphene oxide sheets, leading to higher SSA and many new oxygen-containing functional groups, which gave KOH-activated graphene excellent adsorption capacity (approx. 532.59 mg g-1) of TC. Further study on the adsorption mechanism showed that the Langmuir isotherm model and the pseudo-second-order kinetic model fitted with experiment data...
November 2017: Royal Society Open Science
https://www.readbyqxmd.com/read/29290190/determination-of-specificity-and-pattern-of-antinuclear-antibodies-ana-in-systemic-rheumatic-disease-patients-positive-for-ana-testing
#18
Hamid Nawaz Tipu, Muhammad Mukarram Bashir
OBJECTIVE: To determine probability of finding antinuclear antibodies (ANA) and anti extractable nuclear antigens (ENA) positive samples and associating ANA patterns with anti-ENA reactivities among a consecutive cohort of samples of systemic rheumatic disease patients referred for ANA testing. STUDY DESIGN: Prospective cohort study. PLACE AND DURATION OF STUDY: Immunology Department, Armed Forces Institute of Pathology, Rawalpindi, Pakistan, from January to June 2016...
January 2018: Journal of the College of Physicians and Surgeons—Pakistan: JCPSP
https://www.readbyqxmd.com/read/29289036/synchronization-of-world-economic-activity
#19
Andreas Groth, Michael Ghil
Common dynamical properties of business cycle fluctuations are studied in a sample of more than 100 countries that represent economic regions from all around the world. We apply the methodology of multivariate singular spectrum analysis (M-SSA) to identify oscillatory modes and to detect whether these modes are shared by clusters of phase- and frequency-locked oscillators. An extension of the M-SSA approach is introduced to help analyze structural changes in the cluster configuration of synchronization. With this novel technique, we are able to identify a common mode of business cycle activity across our sample, and thus point to the existence of a world business cycle...
December 2017: Chaos
https://www.readbyqxmd.com/read/29282036/circulating-microrna-s-as-a-diagnostic-tool-for-hepatocellular-carcinoma-in-a-hyper-endemic-hiv-setting-kwazulu-natal-south-africa-a-case-control-study-protocol-focusing-on-viral-etiology
#20
K Sartorius, B Sartorius, A Kramvis, E Singh, A Turchinovich, B Burwinkel, T Madiba, C A Winkler
BACKGROUND: A wide range of studies has investigated the diagnostic proficiency of extracellular microRNAs (miRNAs) in hepatocellular cancer (HCC). HCC is expected to increase in Sub-Saharan Africa (SSA), due to endemic levels of viral infection (HBV/HIV), ageing and changing lifestyles. This unique aetiological background provides an opportunity for investigating potentially novel circulating miRNAs as biomarkers for HCC in a prospective study in South Africa. METHODS: This study will recruit HCC patients from two South African cancer hospitals, situated in Durban and Pietermaritzburg in the province of KwaZulu-Natal...
December 28, 2017: BMC Cancer
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